I applied through a recruiter. The process took 2 days. I interviewed at SpaceX (Seattle, WA) in May 2015
Interview
Very pleasant and relaxed. They looking for a good fit. I found the interviewer very pleasant but professional. He was a supervisor at the company for the job I was applying for, so you'll definitely encounter someone who knows what they are looking for in employees.
Interview questions [1]
Question 1
They really just wanted to know what made me awesome at my last job.